ISO/IEC 17025 Accredited · Trusted by Engineers Worldwide · Serving 11 Industries
+1 530-268-1860 contact@microprecision.com
ISO/IEC 17025 Accredited · Trusted by Engineers Worldwide · Serving 11 Industries
+1 530-268-1860 contact@microprecision.com
Browse used Keysight RF switches — SPDT, SP4T, coaxial, and PIN configurations available from DC to 26.5 GHz. All units tested and verified operational. ISO/IEC 17025 accredited calibration available.
Image | Name | Brand | Condition | Frequency Range | Price |
|---|---|---|---|---|---|
 | Keysight 44476B Microwave Switch offers precise switching from DC to 26.5 GHz with minimal loss and excellent isolation for microwave systems. | Keysight | Used | DC to 26.5 GHz | $175.00 |
 | Keysight 87104C Switch: 4 SPDT channels, 26.5 GHz, low insertion loss, high isolation. Reliable, efficient test automation solution.
| Keysight | Used | DC to 26.5 GHz | $2,295.00 |
 | Keysight N2268A RF Switch, DC to 18 GHz, low loss, high isolation, fast switching, ideal for aerospace, defense, and RF systems. | Keysight | Used | DC to 18 GHz | $595.00 |
 | Keysight P9402A SPDT PIN switch with 100 MHz to 8 GHz range, low insertion loss, fast switching speed, and high power handling for reliable performance. | Keysight | Used | 100 MHz to 8 GHz | $765.00 |
Buying Guide
Switch topology, technology, frequency, and power — what to check before you buy.
SPST (Single Pole Single Throw) connects or disconnects one signal path. SPDT (Single Pole Double Throw) routes one input to either of two outputs — the most common configuration for signal path selection in automated test. SP4T (Single Pole Four Throw) connects one input to any one of four outputs, used when multiple devices share a single instrument. DPDT adds a second pole for more complex cross-routing needs.
PIN diode solid-state switches offer microsecond-to-nanosecond switching and virtually unlimited cycle life — ideal for automated test environments. Mechanical RF switches deliver lower insertion loss and higher isolation but wear over millions of cycles. MEMS switches combine fast switching speeds with low loss at microwave and millimeter wave frequencies. Match the technology to your switching speed requirements and expected duty cycle.
Verify the switch covers your full operating band with margin to spare — insertion loss increases with frequency, so a switch rated to 26.5 GHz will perform better at 18 GHz than one just rated to that limit. Isolation (signal leakage in the OFF state) should be 60–80 dB for quality coaxial RF switches. Impedance should be 50 ohms to match standard RF coaxial test systems.
High power RF switches handle elevated signal levels without thermal damage or performance degradation — always verify average and peak power ratings before use in transmitter test setups. RF switch matrices route multiple signal paths simultaneously and are common in multi-channel ATE systems. SP4T coaxial switches are foundational building blocks for matrix architectures in production test environments.
All Micro Precision Test Equipment RF switches are sold tested and verified operational before shipment. ISO/IEC 17025 accredited calibration is available, providing documented measurement traceability required for aerospace, defense, and production test programs. Our in-house A2LA-recognized laboratory issues calibration certificates meeting MIL-STD-45662 and ISO 9001 quality requirements — giving your team full confidence in every measurement made through your RF switch network.
FAQ
An RF switch routes microwave and radio frequency signals between different paths in a test system. They are used in automated test equipment (ATE), signal routing matrices, radar systems, and communications test setups to direct signals without disconnecting cables — enabling repeatable and reliable switching between instruments and devices under test.
SPDT (Single Pole Double Throw) connects one input to either of two outputs, making it ideal for A/B signal path selection. SP4T (Single Pole Four Throw) connects one input to any one of four outputs, commonly used in multiplexing applications where multiple devices share a single test instrument. SP4T switches offer more routing flexibility in multi-channel automated test systems.
Solid state RF switches (PIN diode or MEMS) have no moving parts, offering switching speeds in microseconds or nanoseconds with virtually unlimited cycle life. Mechanical RF switches use physical contacts that provide lower insertion loss and higher isolation but have a limited life cycle (1–10 million cycles) and millisecond switching speeds. Mechanical switches are preferred where signal integrity is critical; solid state switches are preferred for high-cycle automated test applications.
Insertion loss is the signal power lost as the RF signal passes through the switch in its ON state, expressed in dB. Lower insertion loss means less signal degradation. A typical RF switch has insertion loss between 0.3 dB and 1 dB depending on frequency and technology. Because insertion loss increases with frequency, always choose a switch rated well above your operating frequency to minimize performance impact.
Yes. Micro Precision Test Equipment offers ISO/IEC 17025 accredited calibration for RF switches. Our A2LA-recognized laboratory issues calibration certificates meeting traceability requirements for aerospace, defense, and production test programs. All used RF switches are sold tested and verified operational, with calibration available at checkout or by request.